• woman checking fitness and health tracking

MARS: Mobile Application for Regulating Smoking

  • Goal: Develop a Just-In-Time Adaptive Intervention (JITAI) to enhance real-time, real-world engagement in evidence-based self-regulatory activities
  • Theoretical Framework:
    • Vulnerability, Receptivity, Latent states
  • Measurement: 5 studies of ~1,500 smokers attempting to quit. Macro time scales (demographics, SES, mental health,self-efficacy, etc.) and micro time scales(heart rate variability, EMA, GPS)
  • Modeling: Machine learning (for pattern mining) and probabilistic latent variable models. Joint modeling of EMA, location, sensor, and time-to-event as a function of two underlying latent states